Mac OS X 10.4.6 is delivered via the OS' Software Update system, but is also available from Apple's website in two forms: one to update Mac OS X 10.4.5 and another to update any version of the operating system from 10.4.0 upwards. Intel and PowerPC versions are available of each of these, and there are equivalent updates for Mac OS X Server. Each version incorporates all the most recent Mac OS X security updates.